<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>bootstarp演示页面</title>
  <link rel="stylesheet" href="./lib/bootstrap.min.css">

</head>

<body>

  <button class="btn btn-primary m-1">按钮</button>
  <span class="btn btn-danger m-1">按钮2</span>
  <a href="" class="btn btn-info m-1">按钮3</a>
  <button class="btn btn-link">按钮4</button>

  <div class="d-flex">
    <input type="text" class="form-control m-2">
    <input type="text" class="form-control m-2">
  </div>

  <script src="./lib/bootstrap.bundle.min.js"></script>

</body>

</html>